EA199800625A1 - FERROMAGNETIC PIGMENTS - Google Patents

FERROMAGNETIC PIGMENTS

Info

Publication number
EA199800625A1
EA199800625A1 EA199800625A EA199800625A EA199800625A1 EA 199800625 A1 EA199800625 A1 EA 199800625A1 EA 199800625 A EA199800625 A EA 199800625A EA 199800625 A EA199800625 A EA 199800625A EA 199800625 A1 EA199800625 A1 EA 199800625A1
Authority
EA
Eurasian Patent Office
Prior art keywords
moles
cobalt
pigments
iron
ferromagnetic
Prior art date
Application number
EA199800625A
Other languages
Russian (ru)
Other versions
EA000949B1 (en
Inventor
Петер Поганиух
Эккехард Шваб
Вильма Дауш
Рейнхард Кёрнер
Вернер Вимберски
Original Assignee
Эмтек Магнетикс Гмбх
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Эмтек Магнетикс Гмбх filed Critical Эмтек Магнетикс Гмбх
Publication of EA199800625A1 publication Critical patent/EA199800625A1/en
Publication of EA000949B1 publication Critical patent/EA000949B1/en

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
    • H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
    • H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
    • H01F1/032—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials
    • H01F1/04—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials metals or alloys
    • H01F1/06—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials metals or alloys in the form of particles, e.g. powder
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/62—Record carriers characterised by the selection of the material
    • G11B5/68—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent
    • G11B5/70—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer
    • G11B5/706—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the composition of the magnetic material
    • G11B5/70605—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the composition of the magnetic material metals or alloys
    • G11B5/70621—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the composition of the magnetic material metals or alloys containing Co metal or alloys
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
    • H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
    • H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
    • H01F1/032—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials
    • H01F1/04—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials metals or alloys
    • H01F1/06—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials metals or alloys in the form of particles, e.g. powder
    • H01F1/061—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials metals or alloys in the form of particles, e.g. powder with a protective layer
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12181—Composite powder [e.g., coated, etc.]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2982—Particulate matter [e.g., sphere, flake, etc.]
    • Y10T428/2991—Coated
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2982—Particulate matter [e.g., sphere, flake, etc.]
    • Y10T428/2991—Coated
    • Y10T428/2993—Silicic or refractory material containing [e.g., tungsten oxide, glass, cement, etc.]

Abstract

В заявке описаны ферромагнитные, железо- и кобальтсодержащие пигменты игольчатой формы, содержащие на 100 молей молярной суммы железа и кобальта от 5 до 20 молей кобальта, от 1 до 5 молей алюминия, от 3 до 10 молей кремния, от 0,7 до 3,5 моля фосфора и кислород, причем сумма массовых долей элементов железа, кобальта, алюминия, кремния, фосфора и кислорода составляет от 95 до 100 мас.% в пересчете на общую массу пигментов. Ферромагнитные пигменты могут применяться при изготовлении материалов для магнитной записи.Международная заявка была опубликована вместе с отчетом о международном поиске.The application describes ferromagnetic, iron and cobalt-containing needle-shaped pigments containing, per 100 moles of molar sum of iron and cobalt, from 5 to 20 moles of cobalt, from 1 to 5 moles of aluminum, from 3 to 10 moles of silicon, from 0.7 to 3, 5 moles of phosphorus and oxygen, and the sum of the mass fractions of the elements iron, cobalt, aluminum, silicon, phosphorus and oxygen is from 95 to 100 wt.% In terms of the total weight of pigments. Ferromagnetic pigments can be used in the manufacture of magnetic recording materials. The international application was published together with an international search report.

EA199800625A 1996-01-17 1997-01-09 Ferromagnetic pigments EA000949B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19601412A DE19601412C2 (en) 1996-01-17 1996-01-17 Ferromagnetic pigments
PCT/EP1997/000062 WO1997026666A1 (en) 1996-01-17 1997-01-09 Ferromagnetic pigments

Publications (2)

Publication Number Publication Date
EA199800625A1 true EA199800625A1 (en) 1999-02-25
EA000949B1 EA000949B1 (en) 2000-06-26

Family

ID=7782909

Family Applications (1)

Application Number Title Priority Date Filing Date
EA199800625A EA000949B1 (en) 1996-01-17 1997-01-09 Ferromagnetic pigments

Country Status (12)

Country Link
US (1) US6024890A (en)
EP (1) EP0875066B1 (en)
JP (1) JPH11510322A (en)
KR (1) KR19990077336A (en)
CN (1) CN1208496A (en)
AU (1) AU1440097A (en)
BR (1) BR9707040A (en)
DE (2) DE19601412C2 (en)
EA (1) EA000949B1 (en)
PL (1) PL184008B1 (en)
UA (1) UA44349C2 (en)
WO (1) WO1997026666A1 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000047419A1 (en) * 1999-02-09 2000-08-17 Source Technologies, Inc. Acicular particle ink formulation for an inkjet printer system
JP4154111B2 (en) * 2000-06-09 2008-09-24 富士フイルム株式会社 Magnetic recording medium
ATE503726T1 (en) * 2000-09-26 2011-04-15 Lanxess Deutschland Gmbh CONTACT AND ADSORBER GRANULES
CA2473934C (en) * 2002-01-24 2011-01-04 William Marsh Rice University Ferroxanes, membranes and ceramics made therefrom
US8460456B2 (en) 2005-02-10 2013-06-11 Toda Kogyo Corporation Infrared reflecting black pigment, paint and resin composition
EP1847512B1 (en) * 2005-02-10 2012-06-06 Toda Kogyo Corporation Infrared reflecting black pigment, coating material and resin composition
US7678449B2 (en) * 2006-04-06 2010-03-16 Basf Catalysts Llc Iridescent magnetic effect pigments comprising a ferrite layer

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2879154A (en) * 1956-10-02 1959-03-24 Franklin Inst Of The State Of Acicular metal particles and method of making the same
DE2434096C2 (en) * 1974-07-16 1985-10-17 Basf Ag, 6700 Ludwigshafen Acicular ferromagnetic metal particles consisting primarily of iron and processes for their manufacture
US4133677A (en) * 1976-04-05 1979-01-09 Toda Kogyo Corp. Process for producing acicular magnetic metallic particle powder
US4165232A (en) * 1978-09-15 1979-08-21 Basf Aktiengesellschaft Manufacture of ferromagnetic metal particles essentially consisting of iron
JPS5676510A (en) * 1979-11-28 1981-06-24 Tdk Corp Manufacture of magnetic recording material
US4305753A (en) * 1980-07-31 1981-12-15 Hercules Incorporated Process for producing ferromagnetic metallic particles
US4400337A (en) * 1981-01-10 1983-08-23 Hitachi Maxell, Ltd. Method for production of metal magnetic particles
JPS5891039A (en) * 1981-11-27 1983-05-30 Ishihara Sangyo Kaisha Ltd Manufacture of needlelike alpha-feooh for magnetic recording material
JP2582764B2 (en) * 1986-02-05 1997-02-19 バスフ アクチェン ゲゼルシャフト Method for producing acicular ferromagnetic metal powder consisting essentially of iron
JPH01257309A (en) * 1988-04-07 1989-10-13 Tdk Corp Magnetic powder for magnetic recording medium and manufacture thereof
EP0466338B1 (en) * 1990-06-26 1995-12-20 Toda Kogyo Corp. Spindle-shaped magnetic iron based alloy particles and process for producing the same
JPH05214413A (en) * 1992-02-04 1993-08-24 Nissan Chem Ind Ltd Production of magnetic powder for high-density recording medium
DE4211481A1 (en) * 1992-04-06 1993-10-07 Bayer Ag Cobalt-doped magnetic iron oxide pigment with high coercivity yield - produced by mass doping for quicker, simpler and cheaper epitaxial process
DE69406163T2 (en) * 1993-03-08 1998-03-05 Ishihara Sangyo Kaisha Process for the production of magnetic metallic particles
US5645652A (en) * 1994-12-13 1997-07-08 Toda Kogyo Corporation Spindle-shaped magnetic iron-based alloy particles containing cobalt and iron as the main ingredients and process for producing the same

Also Published As

Publication number Publication date
PL184008B1 (en) 2002-08-30
PL328169A1 (en) 1999-01-18
JPH11510322A (en) 1999-09-07
DE59707729D1 (en) 2002-08-22
WO1997026666A1 (en) 1997-07-24
DE19601412C2 (en) 1999-07-22
CN1208496A (en) 1999-02-17
UA44349C2 (en) 2002-02-15
EP0875066A1 (en) 1998-11-04
DE19601412A1 (en) 1997-07-24
EA000949B1 (en) 2000-06-26
US6024890A (en) 2000-02-15
KR19990077336A (en) 1999-10-25
BR9707040A (en) 1999-06-15
AU1440097A (en) 1997-08-11
EP0875066B1 (en) 2002-07-17

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Legal Events

Date Code Title Description
MM4A Lapse of a eurasian patent due to non-payment of renewal fees within the time limit in the following designated state(s)

Designated state(s): AM AZ BY KZ KG MD TJ TM

MM4A Lapse of a eurasian patent due to non-payment of renewal fees within the time limit in the following designated state(s)

Designated state(s): RU